#changephone {
    width: 100%;
    height: 100vh;
    background-color: #f7f7f7;

    .middle {
        width: 100%;
        height: 100%;
        box-sizing: border-box;
        padding: 0 0.5rem;

        .top {
            width: 100%;
            height: 3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.2rem;

            .back {
                font-size: 1.5rem;
            }
        }

        .main {
            width: 100%;
            height: 20rem;
            margin-top: 1rem;

            .box1 {
                display: flex;
                justify-content: center;
                font-size: 2.8rem;
            }

            .box2 {
                display: flex;
                justify-content: center;
                font-size: 1.5rem;
                color: gray;
            }

            .box3 {
                width: 100%;
                margin-top: 1rem;
                display: flex;
                flex-direction: column;
                align-items: center;

                input {
                    width: 12rem;
                    height: 1rem;
                    border-color: gray;
                    padding: 0.5rem;
                    margin: 0.5rem;
                }
            }

            .btn2 {
                margin-top: 2rem;
                padding: 0.5rem 0;
                width: 100%;
                background-color: #ff9900;
                border-color: #ff9900;
                color: white;
            }

        }
    }
}